Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 10 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/14/2019   18:34:13   (   0.00, -75.20) (  -0.32, -76.60)  159.48                80
 10/15/2019   18:17:58   (   0.00, -75.20) (   0.69, -72.02)  361.90                80
 10/17/2019   06:39:29   (  -0.00, -75.20) (   0.46, -77.23)  231.09                80
 10/18/2019   06:17:54   (  -0.00, -75.20) (  -0.54, -72.65)  290.25                80
 10/19/2019   18:39:35   (   0.01, -75.21) (  -0.58, -77.90)  306.75                80
 10/20/2019   18:23:20   (   0.01, -75.21) (   0.43, -73.33)  214.70                80
 10/22/2019   06:44:51   (  -0.02, -75.21) (   0.72, -78.53)  377.96                80
 10/23/2019   06:23:15   (  -0.02, -75.22) (  -0.29, -73.95)  143.70                80
 10/24/2019   18:44:56   (   0.02, -75.23) (  -0.88, -79.20)  452.46                80
 10/25/2019   18:28:40   (   0.02, -75.24) (   0.13, -74.62)   69.88                80